description: Reference to a Device that is used to specify one or more systems which an Endpoint uses package_name: dk.ehmi.eer derivation: constraint name: EerCoreNetworkSupplySystemExtension type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://medcomehmi.dk/ig/eer/StructureDefinition/eer-dk-network-supply-system-extension'} index: 1 value: choices: [valueReference] index: 3 valueReference: type: Reference choiceOf: value refers: ['http://medcomehmi.dk/ig/eer/StructureDefinition/EerDeviceAP'] index: 4 package_version: 1.0.0-draft extensions: {} class: extension kind: complex-type url: http://medcomehmi.dk/ig/eer/StructureDefinition/eer-dk-network-supply-system-extension base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-draft